Cutting Simulation-Stresses on Tool
Cutting Simulation-Stresses on Tool
(OP)
Hello community,
I am trying to calculate the stresses during a cutting sequence.
However I can not see the stresses on the tool, only on the workpiece
What I mean is as follows:

What I mean to accomplish is to show the stress contours on the tool as well as the workpiece.
Both the tool and the workpiece are meshed with the same elements (Plane Strain Elements, CPE4R).
Any ideas would be highly appreciated.
I am trying to calculate the stresses during a cutting sequence.
However I can not see the stresses on the tool, only on the workpiece
What I mean is as follows:

What I mean to accomplish is to show the stress contours on the tool as well as the workpiece.
Both the tool and the workpiece are meshed with the same elements (Plane Strain Elements, CPE4R).
Any ideas would be highly appreciated.





RE: Cutting Simulation-Stresses on Tool
Is the tool deformable? and does it have a realistic section assignment? If so, what you see in your plot may be completely realistic - the stress distribution in the tool is just way lower than the stress distribution in the workpiece? Try remove the workpiece instance from your plot and you should see the stress distribution in the tool. Alternatively adjust your contour limits?
Dave
RE: Cutting Simulation-Stresses on Tool
The tool is deformable as well as the workpiece.
The material parameters for both the workpiece and the tool are correct- I did the same simulation while the tool was a rigid body and the stresses on the workpiece were the same as now (deformable tool).
Also I did what you said and the stresses on the tool are always 0.
In the above picture it is shown that the center of the mass of the tool always has a 0 stress.
Any more ideas would be highly appreciated.
RE: Cutting Simulation-Stresses on Tool
RE: Cutting Simulation-Stresses on Tool
One(ENCASTRE) is applied to the lowest face of the workpiece.
The second is a Velocity/Angular Velocity boundary condition and is applied to the whole tool instance.
In this condition velocity through the y-axis is 0 and velocity through the x-axis is given a value as you see in the following pio.
RE: Cutting Simulation-Stresses on Tool
RE: Cutting Simulation-Stresses on Tool
However I had to implement the Velocity BC on the far right side of the tool and tick the other 2 boxes for V2 and VR3 else the tool will spin or go upwards towards the y-direction.
RE: Cutting Simulation-Stresses on Tool
RE: Cutting Simulation-Stresses on Tool
It works best if I apply the above mentioned BC at the top edge and the far right face of the tool since this way more faces of the tool are constrained without affecting the faces that participate in contact.
Thanks for the help!